GPG Suite - Use GPG Suite to encrypt, decrypt, sign and verify files or messages.
PhoneLeash: SMS/MMS forwarding - PhoneLeash: SMS/MMS forwarding app offers features that let you forward your desired text messages and multimedia messages to your email or your other mobile phone so that you can access them later.
GnuPG - GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP).
Cellcrypt - Cellcrypt app provides features so you can enjoy secure conference calling, messaging, and sharing of documents.
File Encryption XP - A program designed for protecting confidential information stored on your computer.
YAATA - YAATA app offers features that let you send multimedia files such as images, videos, audio, and GIFs, etc.